我知道从security升级到5.2.X版本之后配置 jwtAuthenticationConverter这个可以解决，但是我现在的security版本为5.1.8，没有JwtGrantedAuthoritiesConverter这个类，而且我这个整体还不能升级，要怎么配置呢
5.2以上版本这样配置，但是我现在这个版本要怎么弄呢，cloud版本为Greenwitch.SR6
@Bean
public Converter<Jwt, ? extends Mono<? extends AbstractAuthenticationToken>> jwtAuthenticationConverter() {
JwtGrantedAuthoritiesConverter jwtGrantedAuthoritiesConverter = new JwtGrantedAuthoritiesConverter();
jwtGrantedAuthoritiesConverter.setAuthorityPrefix(AuthConstants.AUTHORITY_PREFIX);
jwtGrantedAuthoritiesConverter.setAuthoritiesClaimName(AuthConstants.JWT_AUTHORITIES_KEY);
JwtAuthenticationConverter jwtAuthenticationConverter = new JwtAuthenticationConverter();
jwtAuthenticationConverter.setJwtGrantedAuthoritiesConverter(jwtGrantedAuthoritiesConverter);
return new ReactiveJwtAuthenticationConverterAdapter(jwtAuthenticationConverter);
}
